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Searching and Autoalignment Method for Indoor Free-space Optical Communication
출처
한국광학회
발행일
2019-12-31
분야분류
IT소재부품, 해외동향, IT부품정보, IT부품정보 네트워크,
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We propose and demonstrate a searching and autoalignment method for indoor optical wireless communication, using a cost-effective retroreflective sheet and a microelectromechanical system (MEMS) mirror. We use an extremum-seeking method for a single axis and beam steering with a MEMS mirror to maintain a line of sight (LOS) with the optical link. This autoalignment method shows a receiver sensitivity of -31.87 dBm for a bit rate of 2.5 Gb/s over a 7 m communication link.